My experience with Nanos has been 100% failures. The ones I got for my RC truck are slightly puffed and lost their punch in a short while. The internal resistance of the cells has tripled. The Nano I got for my RC heli puffed after only a dozen flights, internal resistance shot up to 30+ ohms in one cell. The tiny Nanos I got for my micro heli are really over rated and I'm left with 9 out of a dozen I bought. The beauty of these tiny 300 mah 1S lipos is that I can discharge them at their C rating to test them. I didn't go up to 35C, I only went up to 20C and that was enough to show how inferior they are.
Compared to 250 mah 1S 25C Hyperions
Nanotechs suck. 65C constant is laughable for a Nanotech. Actually, I'd like to see ANY kind of 50C+ lipo out there take a constant 40C load at the leads.